Ustica Island Threshold Days by Year (ITM00016400)
10 fixed thresholds counted per year at Ustica Island (ITM00016400): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Ustica Island Thresholds
- Ustica Island: days with 10 mm (0.39 in) or more of precipitation in 10 years, most in 2005 with 18.
- Ustica Island: days with 25 mm (0.98 in) or more of precipitation in 10 years, most in 2008 with 3.
- Ustica Island: days with a maximum temperature at or above 30 C (86 F) in 9 years, most in 2007 with 45.
- Ustica Island: days with a maximum temperature at or above 90 F (32.2 C) in 7 years, most in 2007 with 19.
- 10 fixed thresholds have at least one qualifying day at Ustica Island.
Days at or above 30 C (86 F)
9 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1958 | 6 | 6 |
| 1967 | 5 | 3.7 |
| 1968 | 4 | 3.7 |
| 1969 | 2 | 3.7 |
| 1970 | 7 | 7 |
| 2005 | 33 | 40.3 |
| 2007 | 45 | 40.3 |
| 2008 | 43 | 40.3 |
| 2025 | 10 | 10 |
| Year | First date | Last date |
|---|---|---|
| 1958 | 1958-07-03 | 1958-08-12 |
| 1967 | 1967-07-23 | 1967-08-10 |
| 1968 | 1968-07-09 | 1968-09-16 |
| 1969 | 1969-08-14 | 1969-08-15 |
| 1970 | 1970-06-06 | 1970-09-12 |
| 2005 | 2005-06-24 | 2005-09-08 |
| 2007 | 2007-06-19 | 2007-09-18 |
| 2008 | 2008-06-17 | 2008-09-12 |
| 2025 | 2025-06-14 | 2025-08-09 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 9 | 45 | 2007 | 10 |
| 35 C (95 F): Days | 3 | 8 | 2007 | 1 |
| 90 F (32.2 C): Days | 7 | 19 | 2007 | 1 |
| 100 F (37.8 C): Days | 1 | 1 | 2007 | 1 |
| 20 C (68 F): Tropical nights (min | 2 | 92 | 1958 | 32 |
| 25 C (77 F): Days with min | 1 | 0 | n/a | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 10 | 18 | 2005 | 21 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 10 | 3 | 2008 | 6 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 5 | 1 | 2005 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 1 | 0 | n/a | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1958.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2025-12-31).